CN107057028A - A kind of water nano height covers 3D printing coating and preparation method thereof - Google Patents
A kind of water nano height covers 3D printing coating and preparation method thereof Download PDFInfo
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- CN107057028A CN107057028A CN201710090291.1A CN201710090291A CN107057028A CN 107057028 A CN107057028 A CN 107057028A CN 201710090291 A CN201710090291 A CN 201710090291A CN 107057028 A CN107057028 A CN 107057028A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6648—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6651—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3225—Polyamines
- C08G18/3237—Polyamines aromatic
- C08G18/324—Polyamines aromatic containing only one aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/46—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen
- C08G18/4676—Polycondensates having carboxylic or carbonic ester groups in the main chain having heteroatoms other than oxygen containing sulfur
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
- D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
- D06P1/5285—Polyurethanes; Polyurea; Polyguanides
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
- D06P1/651—Compounds without nitrogen
- D06P1/65106—Oxygen-containing compounds
- D06P1/65118—Compounds containing hydroxyl groups
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/30—Ink jet printing
Abstract
3D printing coating is covered the invention provides a kind of water nano height, it is 75~90 that it, which includes mass ratio,：6~10：9~11：1~3 waterborne polyurethane resin, water nano level mill base, ionized water and propane diols；The solid content of the waterborne polyurethane resin is 50~60%, and the fineness of the water nano level mill base is 85~100nm.The key step for the preparation method that water nano height covers 3D printing coating includes：Waterborne polyurethane resin, water nano level mill base are prepared respectively, then waterborne polyurethane resin, water nano level mill base, ionized water and propane diols are sufficiently mixed in mass ratio, and add polyurethane thickener progress viscosity control, the water nano height is made and covers 3D printing coating, it has the characteristics such as the variation that high hiding rare, high resiliency, third dimension are strong, be suitable for printing material, production cost is relatively low, suitable for large-scale industrial production；Therefore, it has market potential value and wide application prospect.
Description
Technical field
The invention belongs to polymeric material field, it is related to a kind of 3D printing coating, more particularly to a kind of water nano height hides
Lid 3D printing coating and preparation method thereof.
Background technology
Environment-friendly digital printing technology has energy-saving and emission-reduction, beautiful in colour, the advantages of high accuracy and good hand touch, and its is advanced
Production principle and technical measures bring completely new concept and unprecedented opportunities to textile printing industry.China's digit printing rises
Step is later, and advanced digital decorating machine is from external import, and corresponding digit printing ink consumptive material, due to quality requirements very
Height, also relies on external import always.
The ink of digit printing, a certain amount of waste water, and mesh can be produced in preceding processing starching, post processing water-washing process
Preceding all digit printing inks all have that hiding rare is low, and stamp third dimension is poor, and versatility is not strong, film poor flexibility, color jail
Spend not high (3-4 grades), the shortcomings of batch color distortion is larger.Generally, the ink in press as bottoming ink needs very strong
Covering power, for covering the color of bottom ink, and the repeatability of top layer ink to be got well, if mileage is inadequate
It can cause to print a big key issue, therefore, there is critically important meaning to the research of mileage.
Stamp is the most important ring of digit printing with the development of ink, is broadly divided into currently used for the ink of digit printing
Five kinds：Acid ink, reactive dye ink, coating ink, thermal transfer ink, direct-injection dispersible ink；However, for current ink
The above mentioned problem of presence, its development trend is as follows：(1) exploitation high-performance, the printing ink of high color fastness, reduce adding for additive
Enter；(2) exploitation aqueous environment protection, cheap ink, reduce environmental pollution, improve the stability and versatility of ink, drop
Low cost；(3) exploitation is more has independent intellectual property right, the ink of industrialization, gradually reduces the dependence to external product, grasps
Ink production technology with independent intellectual property right.
The market of water nano 3D printing coating is huge, especially, digital decorating machine draw a design west stamp already through into
For the mode of production of main flow.The enterprise that European stamp had had more than 90% already is drawn a design using digital decorating machine, and these enterprises are universal
Thinking digital decorating machine to draw a design, reaction speed is fast, cost of drawing a design is low, same effect is good.
And according to related data statistics, China, Southeast Asia and the India of Asia occupy global overall stamp amount
66% or so, China account for the yield in the whole world 30% in Conventional decal, and present digit printing is less than 5% in total quantity.
So the growing space of a few years from now on country digit printing is huge, it is huge that corresponding water nano height covers 3D printing Coating Market
Greatly；Therefore, play its advantage and tie up digit printing ink industry, assist digit printing industry to tie up stamp market, with very big
Profit margin.
The content of the invention
In order to solve above-mentioned technical problem present in prior art, the present invention is intended to provide a kind of water nano height is covered
3D printing coating, it combines the high hiding rare of aqueous printing mortar, and high resiliency, third dimension is strong, is suitable for printing many of material
Without pre-treatment starching and post processing water wash procedures in sample, printing process；Also, which are added the property that nano-particle improves coating
Can, with excellent high covering performance, formulation cost is also significantly reduced, is the production of a great domestic and international market competitiveness
Product.
Therefore, the first aspect of the present invention provides a kind of water nano height and covers 3D printing coating, and it includes mass ratio
For 75~90：6~10：9~11：1~3 waterborne polyurethane resin, water nano level mill base, ionized water and propane diols；
Wherein, the solid content of the waterborne polyurethane resin is 50~60%, and the fineness of the water nano level mill base is
85~100nm.
Preferably, in water nano height covers 3D printing coating, the waterborne polyurethane resin, described aqueous receive
The mass ratio of meter level mill base, the ionized water and the propane diols is 80：8：10：2.
In addition, the water nano height that the second aspect of the present invention additionally provides described in a kind of first aspect present invention covers 3D
The preparation method of coating is printed, following steps are specifically included：
S1：PEPA containing at least two sodium groups on molecular backbone, polyols blend are mixed
Dehydration, then with aromatic diisocyanate with 1:2 mass ratio carries out prepolymerization reaction, and polyurethane prepolymer is made；
S2：By the polyurethane prepolymer and small molecule dihydric alcohol with 1:2 mass ratio carries out end capping reaction, and end-blocking is made
Polyurethane；
S3：Add acetone to dilute and emulsify the polyurethane of the end-blocking, add amine chain extender and carry out chain extending reaction, system
Obtain polyurethane dispersing liquid；
S4：The acetone in the polyurethane dispersing liquid is removed, the waterborne polyurethane resin is made；
S5：Prepare the water nano level mill base；
S6：The waterborne polyurethane resin, water nano level mill base, the ionized water are pressed into matter with the propane diols
Amount ratio is sufficiently mixed, and adds polyurethane thickener progress viscosity control, and the water nano height is finally made and covers 3D printing
Coating.
Preferably, in above-mentioned preparation method, the mixed dehydration in S1 is implemented at 140 DEG C.
Preferably, in above-mentioned preparation method, the temperature of the prepolymerization reaction in S1, the temperature of the end capping reaction in S2, with
And the temperature of the chain extending reaction in S3 is 80 DEG C.
Preferably, in above-mentioned preparation method, the amine chain extender is diethyl toluene diamine.
Preferably, in above-mentioned preparation method, emulsifying agent is additionally added in S6, with the waterborne polyurethane resin, the water
Property nanoscale mill base, the ionized water and the propane diols are sufficiently mixed together.
Preferably, in the S5 of above-mentioned preparation method, the step of preparing the water nano level mill base includes：
Deionized water, propane diols, dispersant, organic pigment are added into Scattered Kettle, stirs 1~2 hour, is fully mixed to
The fineness of pigment is then ground 5~6 times to 20 microns with sand mill, and the fineness of master grind is produced described to 85~100nm
Water nano level mill base.
It is further preferred that in the S5 of above-mentioned preparation method, the deionized water, the propane diols, the dispersant
Mass ratio with the organic pigment is 50：5：10：35.
It is further preferred that in the S5 of above-mentioned preparation method, implementing to stir using 1500 revs/min of rotating speeds.
In a word, water nano of the present invention height cover 3D printing coating have high hiding rare, high resiliency, third dimension it is strong,
It is suitable for printing in the characteristics, also, printing process such as the variation of material without pre-treatment starching and post processing water wash procedures；Separately
Outside, its production cost is relatively low, is suitable for large-scale industrial production.Therefore, using made from preparation method of the present invention
Water nano height covers 3D printing coating, has filled up the domestic high blank for covering printing coating, and its appearance will accelerate the row
The industrial upgrading of industry, the extensive and excellent characteristic tomorrow requirement of its adaptation is huge, therefore, is worth with market potential and wide
Application prospect.
Embodiment
With reference to embodiment, the present invention is further elaborated, but the present invention is not limited to following embodiment party
Formula.
First aspect covers 3D printing coating there is provided a kind of water nano height, and it is 75~90 that it, which includes mass ratio,：6~
10：9~11：1~3 waterborne polyurethane resin, water nano level mill base, ionized water and propane diols；
Wherein, the solid content of the waterborne polyurethane resin is 50~60%, and the fineness of the water nano level mill base is
85~100nm.
In a preferred embodiment, the waterborne polyurethane resin, the water nano level mill base, the ionized water with
The mass ratio of the propane diols is 80：8：10：2.
There is provided the preparation side that a kind of water nano according to first aspect height covers 3D printing coating for second aspect
Method, comprises the following steps：
S1：PEPA containing at least two sodium groups on molecular backbone, polyols blend are mixed
Dehydration, then with aromatic diisocyanate with 1:2 mass ratio carries out prepolymerization reaction, and polyurethane prepolymer is made；
S2：By the polyurethane prepolymer and small molecule dihydric alcohol with 1:2 mass ratio carries out end capping reaction, and end-blocking is made
Polyurethane；
S3：Add acetone to dilute and emulsify the polyurethane of the end-blocking, add amine chain extender and carry out chain extending reaction, system
Obtain polyurethane dispersing liquid；
S4：The acetone in the polyurethane dispersing liquid is removed, the waterborne polyurethane resin is made；
S5：Prepare the water nano level mill base；
S6：The waterborne polyurethane resin, water nano level mill base, the ionized water are pressed into matter with the propane diols
Amount ratio is sufficiently mixed, and adds polyurethane thickener progress viscosity control, and the water nano height is finally made and covers 3D printing
Coating.
In a preferred embodiment, the mixed dehydration in S1 is implemented at 140 DEG C.
In a preferred embodiment, the temperature of the end capping reaction in the temperature of the prepolymerization reaction in S1, S2, and in S3
The temperature of chain extending reaction be 80 DEG C.
In a preferred embodiment, the amine chain extender is diethyl toluene diamine.
In a preferred embodiment, emulsifying agent is additionally added in S6, with the waterborne polyurethane resin, the water nano
Level mill base, the ionized water and the propane diols are sufficiently mixed together.
In a preferred embodiment, the step of water nano level mill base is prepared in S5 includes：
Deionized water, propane diols, dispersant, organic pigment are added into Scattered Kettle, stirs 1~2 hour, is fully mixed to
The fineness of pigment is then ground 5~6 times to 20 microns with sand mill, and the fineness of master grind is produced described to 85~100nm
Water nano level mill base.
In a further preferred embodiment, the deionized water, the propane diols, the dispersant have with described
The mass ratio of machine pigment is 50：5：10：35.
In a further preferred embodiment, implement to stir using 1500 revs/min of rotating speeds.
Embodiment 1
S1：By the PEPA containing at least two sodium groups on molecular backbone, polyols blend at 150 DEG C
Mixed dehydration is carried out, then with aromatic diisocyanate with 1:2 mass ratio carries out prepolymerization reaction at 80 DEG C, and poly- ammonia is made
Ester prepolymer；
S2：By the polyurethane prepolymer and small molecule dihydric alcohol with 1:2 mass ratio carries out end capping reaction at 75 DEG C,
The polyurethane of end-blocking is made；
S3：Add acetone to dilute and emulsify the polyurethane of the end-blocking, add diethyl toluene diamine and enter at 85 DEG C
Row chain extending reaction, is made polyurethane dispersing liquid；
S4：The acetone in the polyurethane dispersing liquid is removed, the waterborne polyurethane resin is made, its solid content is
50%；
S5：With 50：5：10：35 mass ratio adds deionized water, propane diols, dispersant, organic pigment into Scattered Kettle,
Stirred 1 hour using 1500 revs/min of rotating speeds, be fully mixed to the fineness of pigment to 20 microns, then grind 5 with sand mill
~6 times, the fineness of master grind produces the water nano level mill base to 85~90nm；
S6：The waterborne polyurethane resin, water nano level mill base, the ionized water are pressed with the propane diols
75：7：9：2 mass ratio is sufficiently mixed, and adds polyurethane thickener progress viscosity control, and the water nano is finally made
Height covers 3D printing coating.
Embodiment 2
S1：By the PEPA containing at least two sodium groups on molecular backbone, polyols blend at 140 DEG C
Mixed dehydration is carried out, then with aromatic diisocyanate with 1:2 mass ratio carries out prepolymerization reaction at 80 DEG C, and poly- ammonia is made
Ester prepolymer；
S2：By the polyurethane prepolymer and small molecule dihydric alcohol with 1:2 mass ratio carries out end capping reaction at 80 DEG C,
The polyurethane of end-blocking is made；
S3：Add acetone to dilute and emulsify the polyurethane of the end-blocking, add diethyl toluene diamine and enter at 80 DEG C
Row chain extending reaction, is made polyurethane dispersing liquid；
S4：The acetone in the polyurethane dispersing liquid is removed, the waterborne polyurethane resin is made, its solid content is
56%；
S5：With 50：5：10：35 mass ratio adds deionized water, propane diols, dispersant, organic pigment into Scattered Kettle,
Stirred 1.5 hours using 1500 revs/min of rotating speeds, be fully mixed to the fineness of pigment to 20 microns, then ground with sand mill
Mill 5~6 times, the fineness of master grind produces the water nano level mill base to 95~100nm；
S6：The waterborne polyurethane resin, water nano level mill base, the ionized water are pressed with the propane diols
80：8：10：2 mass ratio is sufficiently mixed, and adds polyurethane thickener progress viscosity control, and the water nano is finally made
Height covers 3D printing coating.
Embodiment 3
S1：By the PEPA containing at least two sodium groups on molecular backbone, polyols blend at 140 DEG C
Mixed dehydration is carried out, then with aromatic diisocyanate with 1:2 mass ratio carries out prepolymerization reaction at 85 DEG C, and poly- ammonia is made
Ester prepolymer；
S2：By the polyurethane prepolymer and small molecule dihydric alcohol with 1:2 mass ratio carries out end capping reaction at 85 DEG C,
The polyurethane of end-blocking is made；
S3：Add acetone to dilute and emulsify the polyurethane of the end-blocking, add diethyl toluene diamine and enter at 80 DEG C
Row chain extending reaction, is made polyurethane dispersing liquid；
S4：The acetone in the polyurethane dispersing liquid is removed, the waterborne polyurethane resin is made, its solid content is
60%；
S5：With 48：5：9：33 mass ratio adds deionized water, propane diols, dispersant, organic pigment into Scattered Kettle,
Stirred 2 hours using 1000 revs/min of rotating speeds, be fully mixed to the fineness of pigment to 20 microns, then grind 5 with sand mill
~6 times, the fineness of master grind produces the water nano level mill base to 90~100nm；
S6：By the waterborne polyurethane resin, the water nano level mill base, the ionized water, the propane diols and
Emulsifying agent presses 80：8：10：2：6 mass ratio is sufficiently mixed, and adds polyurethane thickener progress viscosity control, and institute is finally made
State water nano height and cover 3D printing coating.
The specific embodiment of the present invention is described in detail above, but it is intended only as example, and the present invention is not limited
It is formed on particular embodiments described above.To those skilled in the art, it is any to the equivalent modifications that carry out of the present invention and
Substitute also all among scope of the invention.Therefore, the impartial conversion made without departing from the spirit and scope of the invention and
Modification, all should be contained within the scope of the invention.
Claims (10)
1. a kind of water nano height covers 3D printing coating, it is characterised in that it is 75~90 that it, which includes mass ratio,：6~10：9~
11：1~3 waterborne polyurethane resin, water nano level mill base, ionized water and propane diols；
Wherein, the solid content of the waterborne polyurethane resin is 50~60%, the fineness of water nano level mill base for 85~
100nm。
2. water nano height according to claim 1 covers 3D printing coating, it is characterised in that the aqueous polyurethane tree
The mass ratio of fat, the water nano grade mill base, the ionized water and the propane diols is 80：8：10：2.
3. a kind of water nano height according to claim 1 or 2 covers the preparation method of 3D printing coating, its feature exists
In comprising the following steps：
S1：PEPA containing at least two sodium groups on molecular backbone, polyols blend are subjected to mixed dehydration,
Then with aromatic diisocyanate with 1:2 mass ratio carries out prepolymerization reaction, and polyurethane prepolymer is made；
S2：By the polyurethane prepolymer and small molecule dihydric alcohol with 1:2 mass ratio carries out end capping reaction, and the poly- of end-blocking is made
Urethane；
S3：Add acetone to dilute and emulsify the polyurethane of the end-blocking, add amine chain extender and carry out chain extending reaction, be made poly-
Urethane dispersion liquid；
S4：The acetone in the polyurethane dispersing liquid is removed, the waterborne polyurethane resin is made；
S5：Prepare the water nano level mill base；
S6：By the waterborne polyurethane resin, water nano level mill base, the ionized water and the propane diols in mass ratio
It is sufficiently mixed, and adds polyurethane thickener and carry out viscosity control, the water nano height is finally made and covers 3D printing coating.
4. preparation method according to claim 3, it is characterised in that the mixed dehydration in S1 is implemented at 140 DEG C.
5. preparation method according to claim 3, it is characterised in that the end-blocking in the temperature of the prepolymerization reaction in S1, S2
The temperature of reaction, and the temperature of the chain extending reaction in S3 is 80 DEG C.
6. preparation method according to claim 3, it is characterised in that the amine chain extender is diethyl toluene diamine.
7. preparation method according to claim 3, it is characterised in that emulsifying agent is additionally added in S6, with the aqueous poly- ammonia
Ester resin, water nano level mill base, the ionized water and the propane diols are sufficiently mixed together.
8. preparation method according to claim 3, it is characterised in that in S5, prepares the step of the water nano level mill base
Suddenly include：
Deionized water, propane diols, dispersant, organic pigment are added into Scattered Kettle, stirs 1~2 hour, is fully mixed to pigment
Fineness to 20 microns, then with sand mill grind 5~6 times, the fineness of master grind is produced described aqueous to 85~100nm
Nanoscale mill base.
9. preparation method according to claim 8, it is characterised in that the deionized water, the propane diols, described scattered
The mass ratio of agent and the organic pigment is 50：5：10：35.
10. preparation method according to claim 8, it is characterised in that implement stirring using 1500 revs/min of rotating speeds.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110512441A (en) * | 2019-09-12 | 2019-11-29 | 深圳凯奇化工有限公司 | A kind of water nano height covers 3D printing ink and preparation method thereof |
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Application publication date: 20170818 |